response unit for E-prime 2.0 Professional with ERP hardware

[Daniela Pfabigan]

hi!

we are currently using the PST response box: no problems with timing or
response logging, but still some artifacts during data acquisition...

e-prime support suggested grounding, therefore, we connected the box to
our EEG machine, which is definitely grounded. no constant hum now, but
still during 5-10% of the trials, high-amplitude artifacts are visible
after a button press. our actual assumption is a defective contact of
one of the buttons...

any further suggestions would be appreciated! :-)

kind regards,
daniela

-- 
Mag. Daniela Pfabigan
Brain Research Laboratory (BRL)
Faculty of Psychology
University of Vienna



On Tue, 2009-04-21 at 19:19 +1000, Peter Quain wrote:
> 
> Your monitor has an AC power supply too. So long as the response box 
> power cord is not draped over the electrode cable I think any 
> radiated interference should be dealt with by the common mode 
> rejection built into modern EEG amps. Could be wrong on this though.
> 
> At 04:09 AM 11/04/2009, you wrote:
> 
> >Hi. I was wondering if anyone has suggestions for a button response
> >unit to use with E-Prime 2.0 Professional in the context of ERP/EEG
> >experiments? The PST response unit does not appear to be ideal for
> >this because it has an A/C power cable coming up to the unit that may
> >cause interference with the ERP signal. I'd like some type of video
> >game controller or wireless unit that the participant can hold in
> >their lap comfortably. Also, if it can plug into USB port, that may be
> >ideal. Does anyone have any suggestions? Also, if anyone has
> >successfully used the PST response unit in the context of ERP/EEG
> >equipment, please let me know your thoughts on this. Thanks. I'd
> >appreciate any feedback!
> >
> >Jeffrey S. Bedwell, Ph.D.
> >Assistant Professor
> >Department of Psychology
> >University of Central Florida
> >
> 
> > 
> 



--~--~---------~--~----~------------~-------~--~----~
You received this message because you are subscribed to the Google Groups "E-Prime" group.
To post to this group, send email to e-prime at googlegroups.com
To unsubscribe from this group, send email to e-prime+unsubscribe at googlegroups.com
For more options, visit this group at http://groups.google.com/group/e-prime?hl=en
-~----------~----~----~----~------~----~------~--~---